LaterThis.com How does it work?You find links, blog posts and articles that you don't have time for right now. Save the link to LaterThis with one click. Come back to LaterThis and go through your links when you have the time.
scrible lets you annotate web pages in the browser and easily save, share and collaborate on Web-based research. http://www.scrible.com/#news - There is a brand new features custom tailored for students. It's available for all currently enrolled students with an active school (e.g. ".edu") email address. Signup allows students to save annotations and bookmark what they want to read later.
Social Bookmarking
Using the Internet to store, organize and manage bookmarks of desired web pages.